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Class Information
Number: 175/415
Name: Boring or penetrating the earth > Bit or bit element > Impact or percussion type > Combined with rotary
Description: Apparatus in which the cutting edge is formed to disintegrate the formation as a result of simultaneous rotary and a forceful contact or a repetitive striking action.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7314102 |
Percussion or hammer drill |
Jan. 1, 2008 |
| 7290624 |
Method and device for drilling holes in soil or rock material |
Nov. 6, 2007 |
| 7261169 |
Shank for a rotary/percussion tool |
Aug. 28, 2007 |
| 7258180 |
Rotary hammerdrill bit |
Aug. 21, 2007 |
| 7255182 |
Ground drilling tool |
Aug. 14, 2007 |
| 7255181 |
Method and device for the drilling of holes in ground or rocky material |
Aug. 14, 2007 |
| 7231992 |
Drill bit |
Jun. 19, 2007 |
| 7225890 |
Cutting plate for a drill bit |
Jun. 5, 2007 |
| 7185717 |
Drill bit assembly |
Mar. 6, 2007 |
| 7168509 |
Percussive reamer and method of use thereof |
Jan. 30, 2007 |
| 7137462 |
Drill bit |
Nov. 21, 2006 |
| 7124843 |
Bit assembly for a hammering drill |
Oct. 24, 2006 |
| 7104344 |
Percussion drilling head |
Sep. 12, 2006 |
| 7097396 |
Drill bit |
Aug. 29, 2006 |
| 7070010 |
Drill bit |
Jul. 4, 2006 |
| 7066694 |
Cutting plate for a drill bit |
Jun. 27, 2006 |
| 7059432 |
Cup-shaped rock drill head |
Jun. 13, 2006 |
| 7055633 |
Concrete drill |
Jun. 6, 2006 |
| 6976549 |
Drilling tool |
Dec. 20, 2005 |
| 6959775 |
Drill bit |
Nov. 1, 2005 |
| 6942046 |
Bore bit for very hard material |
Sep. 13, 2005 |
| 6938710 |
Bit head retaining system and method of installing a bit head in a percussion drill |
Sep. 6, 2005 |
| 6918455 |
Drill bit with large inserts |
Jul. 19, 2005 |
| 6910838 |
Rock drill |
Jun. 28, 2005 |
| 6883623 |
Earth boring apparatus and method offering improved gage trimmer protection |
Apr. 26, 2005 |
| 6742609 |
Rotational impact drill assembly |
Jun. 1, 2004 |
| 6702045 |
Drilling apparatus |
Mar. 9, 2004 |
| 6681875 |
Guide tube of a drill string configured to facilitate unscrewing thereof from a member of the drill string |
Jan. 27, 2004 |
| 6659205 |
Rock drill |
Dec. 9, 2003 |
| 6655479 |
Twist-drill bit |
Dec. 2, 2003 |
| 6588519 |
Head for a rock drill |
Jul. 8, 2003 |
| 6550555 |
Drill bit for drilling rock |
Apr. 22, 2003 |
| 6543558 |
Drilling and/or chiseling tool |
Apr. 8, 2003 |
| 6533052 |
Drill bit for impact-assisted directional boring |
Mar. 18, 2003 |
| 6502650 |
Percussive down-the-hole hammer for rock drilling, and a drill bit used therein |
Jan. 7, 2003 |
| 6499547 |
Multiple grade carbide for diamond capped insert |
Dec. 31, 2002 |
| 6494275 |
Rock drill bit having retrac teeth and method for its manufacturing |
Dec. 17, 2002 |
| 6450273 |
Drilling tool including drilling head with multiple cutting members separated drilled material grooves |
Sep. 17, 2002 |
| 6450272 |
Rock drill |
Sep. 17, 2002 |
| 6446741 |
Rock drill |
Sep. 10, 2002 |
| 6431295 |
Rock drill |
Aug. 13, 2002 |
| 6431294 |
Percussive tool |
Aug. 13, 2002 |
| 6405813 |
Rock drill for drilling bores in reinforced concrete |
Jun. 18, 2002 |
| 6371226 |
Drag-type rotary drill bit |
Apr. 16, 2002 |
| 6349780 |
Drill bit with selectively-aggressive gage pads |
Feb. 26, 2002 |
| 6328506 |
Masonry drill bit |
Dec. 11, 2001 |
| 6283232 |
Rock drill |
Sep. 4, 2001 |
| 6276467 |
Percussive rock drill bit with asymmetric wing |
Aug. 21, 2001 |
| 6253864 |
Percussive shearing drill bit |
Jul. 3, 2001 |
| 6202768 |
Rock drilling tool and reamer for percussive drilling |
Mar. 20, 2001 |
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